pnpm workspace support

Largely works but this error is consistently printed in CI indicating incomplete cleanup. Jobs work and this error does not cause the scenario to fail, but figured I'd put this here for a cleanup pass later. This may apply to yarn workspaces as well?

```
Error cleaning up scenario: [Error: ENOENT: no such file or directory, stat '/home/runner/work/data/data/tests/main/pnpm-lock.ember-try.yaml'] {
errno: -2,
code: 'ENOENT',
syscall: 'stat',
path: '/home/runner/work/data/data/tests/main/pnpm-lock.ember-try.yaml'
}
```